EP3570401A1 - Parc éolien à compensation de circuits auxiliaires - Google Patents

Parc éolien à compensation de circuits auxiliaires Download PDF

Info

Publication number: EP3570401A1
Authority: EP; European Patent Office
Prior art keywords: power; wind; load; minimum; loads
Prior art date: 2018-05-14
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.): Granted

Application number

EP19173817.8A

Other languages

German (de)

English (en)

Other versions

EP3570401B1 (fr

Inventor

Marco Hansen

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Siemens Gamesa Renewable Energy Service GmbH

Original Assignee

Senvion GmbH

Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)

2018-05-14

Filing date

2019-05-10

Publication date

2019-11-20

2019-05-10 Application filed by Senvion GmbH filed Critical Senvion GmbH

2019-11-20 Publication of EP3570401A1 publication Critical patent/EP3570401A1/fr

2022-06-29 Application granted granted Critical

2022-06-29 Publication of EP3570401B1 publication Critical patent/EP3570401B1/fr

Status Active legal-status Critical Current

2039-05-10 Anticipated expiration legal-status Critical

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Classifications

- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for AC mains or AC distribution networks
- H02J3/38—Arrangements for feeding a single network from two or more generators or sources in parallel; Arrangements for feeding already energised networks from additional generators or sources in parallel
- H02J3/46—Controlling the sharing of generated power between the generators, sources or networks
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J11/00—Circuit arrangements for providing service supply to auxiliaries of stations in which electric power is generated, distributed or converted
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for AC mains or AC distribution networks
- H02J3/38—Arrangements for feeding a single network from two or more generators or sources in parallel; Arrangements for feeding already energised networks from additional generators or sources in parallel
- H02J3/381—Dispersed generators
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2101/00—Supply or distribution of decentralised, dispersed or local electric power generation
- H02J2101/20—Dispersed power generation using renewable energy sources
- H02J2101/28—Wind energy
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/30—Wind power

Definitions

the invention relates to a method for operating a wind farm on a network comprising a park master and a plurality of wind turbines, wherein the wind turbines require a minimum power for their operation.
the wind turbines also have at least one power consuming load for their own use.
Modern wind turbines with all their electrical and electronic components have a considerable internal demand. For example, it achieves an order of magnitude of up to 20,000 kWh per year for wind turbines of the 3MW class. Due to the widespread expansion of wind energy, as wind farms increasingly come to a standstill due to impending grid overload, the wind farm's own needs can no longer be met from its own production as a result of the shutdown. Instead, power needs to be sourced from the network. This is expensive for the operator.
the invention is based on the object, starting from the last-mentioned approach for the ongoing operation of a wind farm to provide an improved power delivery to meet the domestic needs.
a method for operating a wind farm on a network comprising a park master and a plurality of wind turbines having a minimum power for their operation, the wind turbines having at least one power consuming load
provision of the minimum power in the park master determining free switchable loads of the wind turbines, detecting the power values of the freely switchable loads, taking into account only wind turbines in a disconnected state, combining these power values to an optional load (OL), detecting a power draw of the wind farm from the grid as a real load (RL), check whether real load and option load together are at least as large as the minimum power, and if so, starting the wind turbine with this minimum power and operating this wind turbine ; Controlling the supply of power from the grid to a minimum value or zero value by successively switching on further or switching off at least one of the switchable loads.
a power-consuming load is understood to mean a component of the wind power plant which requires electrical power for its operation. Such a component is then a freely switchable load, if the operation of this component is usually not required for a stopped wind turbine, but in principle possible; Such a component can therefore be switched on when the wind energy plant is at a standstill, but does not have to.
heaters such as transmission oil heaters or blade heaters, or fans, as they are used in particular for cooling of generator or other electrical components in the case of high generator load.
the invention is based on the idea to determine the available freely switchable loads in the individual wind turbines. Their power values are recorded, taking into account only those wind turbines which are in a switched-off state, in which case the said components can indeed (largely) be switched on or off freely. It is thus a list of existing in the wind farm on the individual wind turbines consumers generated, which can be switched on and off if desired. Their power requirement forms a load, which can optionally be switched on request (usually by the parkmaster); this is called an optional load for a short time. Furthermore, there is a real load in the wind farm, resulting from the Achievement results, which is actually necessary to cover the own needs of the wind energy plants and possibly further facilities of the wind farm; This load is referred to as real load.
the core of the method according to the invention is to examine whether on the basis of the existing real load by connecting the optional load the power requirement can be increased to such a value that it is equal to or greater than the minimum power for the operation of one of (usually the weakest) wind turbine. In this case, this wind turbine (or another with the same minimum power) is started and operated. With the electric power generated by this wind turbine, on the one hand, the actual internal demand (real load) is covered, and the remaining difference to the minimum power is compensated by connecting the freely switchable loads as an optional load.
the one wind turbine which has the lowest minimum power is selected for starting. If several wind turbines with the same minimum power are available, any one of them can be used. This offers the advantage that it allows the option load to be minimized, which reduces the complexity of the method according to the invention.
a dynamic determination of the freely switchable loads is expedient, in particular taking into account a current state of the respective wind energy plant. In this way it can be prevented that by switching the switchable loads a wind turbine is adversely affected in their operability.
the heating for the transmission oil is no longer determined as freely switchable load. It can then no longer be used as an option load. In this way it is prevented that by using this heater as an optional load to excessive heating of the transmission oil.
the freely switchable loads preferably include except heaters, especially for generator, cabinet housing and rotor blades, and fans for generator and / or transmission, or pumps of wind turbines, such as transmission oil pumps.
Components like pumps or fans have the advantage that they are usually over the full temperature range can be used and thus are reliably available as a freely switchable load.
the parkmaster expediently generates a central compilation of the freely switchable loads, their availability and their respective performance value. It is useful if he updates this compilation periodically. In this way, an up-to-date adaptation to the prevailing operating and environmental parameters is made possible.
the parkmaster expediently determines the power consumption of the wind farm over a predefinable period of time. This can be achieved with respect to short-term interference protected leadership of the method according to the invention. It is particularly advantageous if the time period is at least as long as a time period which is required for starting the wind power plant with the minimum power. This ensures that sufficient time is available to start the wind turbine before the next update takes place.
the invention further relates to a corresponding wind farm and a retrofit kit for a park master of an existing wind farm.
wind turbines 1 In the illustrated embodiment, it is a wind farm with multiple wind turbines 1 and a park master 4 for higher-level control of wind turbines 1.
the wind turbines 1 can be made identical in itself; they are provided for the distinctness of the representation with Roman numerals (present: I, II, III).
the wind turbines 1 are conventionally constructed and comprise a tower 10 with a gondola 11 pivotally arranged at the upper end in the azimuth direction.
a wind rotor 12 is rotatably arranged on an end side of the nacelle 11 and has a generator (not shown) arranged in the nacelle 11 ) drives.
the generator converts the mechanical power received from the wind rotor 12 into electrical power, and cooperates with an inverter (not shown) to output the electric power at an output of the wind turbine 1.
the wind turbines 1 can typically be operated over a considerable power range, but they usually can not be regulated to zero power. For their operation, they need a certain minimum power PMin_i, which is to be given by them.
the minimum output varies depending on the type of system; with small plants it can be equal ??? his.
the individual minimum power PMin_i of the respective i-th wind energy plant is expressed by the index "i".
the power generated by the individual wind turbines 1 during operation is transmitted via an in-park collection network 2 and a parking transformer 48.
a transmission network 9 of a network operator is connected to the parking transformer 48 via a point of common coupling (PCC) 90.
the wind farm further comprises a signal network 3, via which a parkmaster 4 communicates with the individual wind energy plants 1 of the wind farm, in particular with a control device 15 of the respective wind turbine 1 arranged in the nacelle 11.
An input 46 is also provided on the park master 4, are connected to the output from a parent control center 99 guide signals.
power measuring devices are provided, a first power measuring device 47 on the in-park collecting network 2 and a second power measuring device 49 at the linking point 90.
the wind turbines 1 each have a plurality of components that are needed for the operation of the wind turbine. These are, in particular, heaters 16 in the nacelle 11, blade heaters 17 on rotor blades of the wind rotor 12, fans 18 in the nacelle and / or on a transmission between wind rotor 12 and generator, an azimuth drive 19 for pivoting the nacelle 11, etc.
the wind farm can be turned off as a whole.
a corresponding control signal is transmitted from the higher-level control center 99 to the parkmaster 4.
the wind farm is then no longer feed power into the transmission network 9.
Decisive measuring point for this is usually the linkage point 90, which is associated with the power measuring device 49 in the present case.
the parkmaster 4 detects this real consumption of the wind farm by means of a real load detector 41, to which the first power measuring device 47 is expediently connected.
I, II and III three wind turbines (referred to as I, II and III) records on the option loads formed in addition to the type of component (16 for a heater) indicate whether they are available as an optional load at all (symbolized by a tick for Yes or a bar for No) and the current switching state (On or Off). This is preferably done locally by the respective operating control 15. This transmits the records thus acquired via the signal network 3 to the park master 4.
the parkmaster 4 also has a list generator 5, which records the power values of the freely switchable loads determined by the individual wind energy installations 1 for the optional load. This acts together with a control logic unit 6, which in a first component 61 is a sum of real load and Optional load determined. Furthermore, a minimum former 62 is provided which determines that wind turbine 1 of the wind farm which has the smallest minimum power P MIN . Furthermore, a comparator unit 63 is provided which is designed to check whether the sum of real load and optional load formed by the component 61 is at least as great as the smallest minimum power P MIN .
a combined switching and control unit 64 is provided, which then one of the wind turbines, namely the one with the minimum minimum power, starts and corresponding control commands to the various wind turbines 1 of the wind farm to turn on the option loads. Further, a timer 65 is provided, which performs an update at periodic intervals, wherein the time interval is at least as long as the time required to start the wind turbines 1 period.
a zero power control 7 is furthermore provided in the park master. This cooperates with the second power measuring device 49. This detects the power at node 90, so at the interface to the transmission network 9. If (too much) power from the network 9, the zero power control 7 cooperates with the control logic 6 in such a way that at least one of the option loads is turned off so reduce the benefit receipt; if there is an injection of power into the network 9, then it will be accordingly Added another option load to comply with the request of the network operator 99, no power to feed into the transmission network 9.
a harmonizer unit 8 is provided. This interacts with the control logic 6 in such a way that it monitors the duty cycle of the various option loads. Low duty cycle components are determined and are subsequently preferably switched as an optional load. In this way, compensation is achieved with regard to the load on the components as an optional load across the various wind turbines 1 of the wind farm.
the operation is in accordance with the flowchart FIG. 3 illustrated.
the actual power reference real load
a filtering 81 MA - moving average
T aver adjustable period of time
Its output is applied to a first input of a summing element 82.
the values for the available optional load determined by the list generator 5 are applied.
a comparator 83 checks whether this value is greater than the minimum minimum power P MIN . If this is not the case, then jump back and the query is repeated.
step 84 a start command to one of the wind turbines with the said minimum minimum power takes place and in step 85 a switching command for activating the corresponding option loads. Subsequently, then in step 86, a control to zero supply with respect to the transmission network.
a (more expensive) power consumption from the network 9 can be avoided even with a wind farm which is not in operation with its wind power plants, although it does not per se fall below the minimum power self-covering own needs can be increased by adding optional loads so far that at least the smallest of the wind turbines 1 can be started and thus a self-sufficient power supply in the wind farm can be achieved.
the (expensive) power consumption from the network can thus be brought to zero.

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Engineering & Computer Science (AREA)
Power Engineering (AREA)
Wind Motors (AREA)
Supply And Distribution Of Alternating Current (AREA)

EP19173817.8A 2018-05-14 2019-05-10 Parc éolien à compensation de circuits auxiliaures Active EP3570401B1 (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
DE102018003854.9A DE102018003854A1 (de)	2018-05-14	2018-05-14	Windpark mit Eigenbedarfskompensation

Publications (2)

Publication Number	Publication Date
EP3570401A1 true EP3570401A1 (fr)	2019-11-20
EP3570401B1 EP3570401B1 (fr)	2022-06-29

Family

ID=66483927

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP19173817.8A Active EP3570401B1 (fr)	2018-05-14	2019-05-10	Parc éolien à compensation de circuits auxiliaures

Country Status (3)

Country	Link
EP (1)	EP3570401B1 (fr)
DE (1)	DE102018003854A1 (fr)
DK (1)	DK3570401T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP3848575A1 (fr) *	2020-01-09	2021-07-14	Nordex Energy SE & Co. KG	Procédé de fonctionnement d'un parc éolien comprenant plusieurs éoliennes ainsi que parc éolien correspondant

Citations (10)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE202004009071U1 (de) *	2004-05-18	2004-08-12	Nordex Energy Gmbh	Windenergieanlage mit einem Hilfsgenerator
WO2004099604A2 (fr)	2003-05-05	2004-11-18	Aloys Wobben	Procede pour faire fonctionner un champ d'eoliennes
EP1961957A2 (fr) *	2005-07-22	2008-08-27	Gamesa Innovation & Technology, S.L.	Procede permettant de maintenir en fonctionnement les composants d'une turbine eolienne et turbine equipee de composants permettant le maintien en fonctionnement
US20120146423A1 (en) *	2009-04-03	2012-06-14	Xemc Darwind B.V.	Wind farm island operation
US20130154262A1 (en) *	2011-12-19	2013-06-20	Anshuman Tripathi	Quick start-up of wind turbine generators
DE102012204239A1 (de) *	2012-03-16	2013-09-19	Wobben Properties Gmbh	Verfahren zum Steuern einer Windenergieanlage
EP2824323A1 (fr) *	2013-07-12	2015-01-14	Siemens Aktiengesellschaft	Fonctionnement de turbines éoliennes en tant que charges d'amortissement
EP2891794A1 (fr)	2013-12-30	2015-07-08	General Electric Company	Système et procédé pour l'accréditation d'éoliennes
US20150256030A1 (en) *	2012-11-27	2015-09-10	Abb Technology Ag	Method for operating an energy installation, and an energy system having such energy installations
DE102015201431A1 (de) *	2015-01-28	2016-07-28	Wobben Properties Gmbh	Verfahren zum Betreiben eines Windparks

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP3149325B1 (fr) *	2014-05-30	2020-09-30	Vestas Wind Systems A/S	Centrale éolienne présentant des pertes réduites
DE102016125953A1 (de) *	2016-12-30	2018-07-05	Wobben Properties Gmbh	Verfahren zum Betreiben eines Windparks

2018
- 2018-05-14 DE DE102018003854.9A patent/DE102018003854A1/de not_active Withdrawn
2019
- 2019-05-10 EP EP19173817.8A patent/EP3570401B1/fr active Active
- 2019-05-10 DK DK19173817.8T patent/DK3570401T3/da active

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO2004099604A2 (fr)	2003-05-05	2004-11-18	Aloys Wobben	Procede pour faire fonctionner un champ d'eoliennes
DE202004009071U1 (de) *	2004-05-18	2004-08-12	Nordex Energy Gmbh	Windenergieanlage mit einem Hilfsgenerator
EP1961957A2 (fr) *	2005-07-22	2008-08-27	Gamesa Innovation & Technology, S.L.	Procede permettant de maintenir en fonctionnement les composants d'une turbine eolienne et turbine equipee de composants permettant le maintien en fonctionnement
US20090206603A1 (en) *	2005-07-22	2009-08-20	Jose Ignacio Llorente Gonzalez	Method of maintaining wind turbine components operational and a turbine comprising components suitable for operational maintenace
US20120146423A1 (en) *	2009-04-03	2012-06-14	Xemc Darwind B.V.	Wind farm island operation
US20130154262A1 (en) *	2011-12-19	2013-06-20	Anshuman Tripathi	Quick start-up of wind turbine generators
DE102012204239A1 (de) *	2012-03-16	2013-09-19	Wobben Properties Gmbh	Verfahren zum Steuern einer Windenergieanlage
US20150256030A1 (en) *	2012-11-27	2015-09-10	Abb Technology Ag	Method for operating an energy installation, and an energy system having such energy installations
EP2824323A1 (fr) *	2013-07-12	2015-01-14	Siemens Aktiengesellschaft	Fonctionnement de turbines éoliennes en tant que charges d'amortissement
EP2891794A1 (fr)	2013-12-30	2015-07-08	General Electric Company	Système et procédé pour l'accréditation d'éoliennes
DE102015201431A1 (de) *	2015-01-28	2016-07-28	Wobben Properties Gmbh	Verfahren zum Betreiben eines Windparks

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP3848575A1 (fr) *	2020-01-09	2021-07-14	Nordex Energy SE & Co. KG	Procédé de fonctionnement d'un parc éolien comprenant plusieurs éoliennes ainsi que parc éolien correspondant
US11549487B2 (en)	2020-01-09	2023-01-10	Nordex Energy Se & Co. Kg	Method for operating a wind farm having a plurality of wind turbines and corresponding wind farm

Also Published As

Publication number	Publication date
DK3570401T3 (da)	2022-08-01
EP3570401B1 (fr)	2022-06-29
DE102018003854A1 (de)	2019-11-14

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